void main() {
  print('123');
  Map<String, String> map = {};
  map['name'] = '1name23';
  map['age'] = '123';
  print(map.toString());
   copy().then((v)async{
     await Future.delayed(Duration(seconds: 1));
    print(v);
  });
   print('1232131');
}

Future<String> copy() async => 'sad';
